https://devzone.nordicsemi.com/f/nordic-q-a/120543/nrf9160-mqtt-standard-version-and-qos-levelHi, I use the nRF9160 with SDK2.5.0. Which MQTT version (3.1, 3.1.1 and 5.0) does it support? And w hich QoS level (0, 1 and 2) does it support? Does it support QUIC as an additional transport protocol to enhance performance and reliability overen-USTelligent Community 13Tue, 08 Apr 2025 12:55:38 GMThttps://devzone.nordicsemi.com/thread/531031?ContentTypeID=1Tue, 08 Apr 2025 12:55:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:019e078d-94d7-468d-b1c1-59cae2439913dejans<p>Hi,<br /><br />Documentation provides information about supported&nbsp;<a href="https://docs.zephyrproject.org/latest/connectivity/networking/api/protocols.html">protocols</a>,&nbsp;<a href="https://docs.nordicsemi.com/bundle/zephyr-apis-latest/page/group_mqtt_socket.html#ga90d152a4b0986e9a07a12c7c56f5e2a0">MQTT version</a>&nbsp;and&nbsp;<a href="https://docs.nordicsemi.com/bundle/zephyr-apis-latest/page/group_mqtt_socket.html#ga396015e492b0fee8da37c7168d9cdb33">MQTT QoS</a>. There is neither support for TLS v1.3 in secure sockets nor QUIC protocol support in NCS v2.5.0. For QUIC protocol support, there is this&nbsp;<a href="https://github.com/zephyrproject-rtos/zephyr/issues/67119">enhancement proposal</a>.<br /><br />Best regards,<br />Dejan</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/530950?ContentTypeID=1Tue, 08 Apr 2025 07:30:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3b3c59ff-4b60-42e1-8411-90698aea070dLiza<p>And&nbsp;<span>w</span><span>hich TLS version (e.g. TLS 1.2, 1.3) does it support?&nbsp;</span></p><div style="clear:both;"></div>